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arch: acpi: Correct starting length of MCFG table

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The starting length of the MCFG table was too long resulting in the
kernel trying to get extra MCFG entries from the table that weren't
there resulting in the following error message from the kernel:

PCI: no memory for MCFG entries

The MCFG table also has an 8 bytes of padding at the start before the
table begins.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2019-09-16 17:51:30 +01:00 committed by Samuel Ortiz
parent 67ef4f0d74
commit eb60106159
1 changed files with 4 additions and 1 deletions
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5
arch/src/x86_64/acpi.rs
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@ -276,7 +276,10 @@ pub fn create_acpi_tables(
tables.push(madt_offset.0);
// MCFG
let mut mcfg = SDT::new(*b"MCFG", 60, 1, *b"CLOUDH", *b"CHMCFG ", 1);
let mut mcfg = SDT::new(*b"MCFG", 36, 1, *b"CLOUDH", *b"CHMCFG ", 1);
// MCFG reserved 8 bytes
mcfg.append(0u64);
// 32-bit PCI enhanced configuration mechanism
mcfg.append(PCIRangeEntry {